<div>
  The <a href="https://en.wikipedia.org/wiki/.properties">properties file</a>
  is a collection of key,value pairs of the form key=value1,value2,...
  <br><br>
  Properties may reference other properties. For example:
  <blockquote>
    prop1=a,b,c,d,e<br>
    prop2=${prop1},f,g,h
  </blockquote>
  The properties file can be placed anywhere on the file-system that Jenkins can access.
  <br><br>
  This property file has different meaning for multi-level select -- see the parameter type help for
  more info.
</div>
